In November 2011, in the vicinity of our planet fly large asteroid, called 2005 YU55. This celestial wanderer was opened by experts from the University of Arizona, working on the project SpaceWatch in 2005. 2005 YU55 has a fairly large size, according to the latest data of its size is at least 400 meters in diameter, which puts it in a section of large cosmic bodies with a potential threat. Asteroid visits our planet is not the first time: approximately every 30 years, it crosses the orbit of Earth, but at the very minimum distance he approaches in the near November. According to preliminary calculations, the asteroid 2005 YU55 will fly at a distance of 300,000 kilometers away, which is much less than the distance to the moon, about 7-8 November 2011. Such proximity puts it in the category of potentially dangerous space objects, since there is a likelihood of a fall. NASA astronomers, as always, claim that there is no threat, but even they admit that because of the fact that 2005 YU55 is rotating around its own axis, it can be a bit of time to change its flight path and, given the gravitational forces of the Earth, there is a theoretical possibility with our These meetings. Collision with a 400-meter cliff does not promise us no good, but you should be optimistic and, once again, just wait until that date to at least observe, even in amateur telescope eyepiece, the unusual large asteroid. NASA plans to carefully examine the 2005 YU55, to learn more about asteroids in general, as well as make certain schemes that would prevent the decline of such a massive body on the planet. Astronomers in the next few months, well consider dangerous asteroids and it will create a complete 3D model. The command "2012" will continue to monitor potentially dangerous celestial wanderer.